I never really noticed anything for the short while I had a 6D but I immediately noticed this 5D3 flashes a dim red in the entire viewfinder from the reflections when it confirms in low light. Kinda pointless to make an issue out of it since it doesn't affect anything picture wise.

This actually bugs me more than the 6D reflection since it is infinitely more distracting, there's no way to work around it and still have the red AF pt confirmation flash. Annoying but not the end of the world. I just can't stop thinking the same thing every time I AF the 5D3... all previous older tech cameras didn't do this but now a newest high tech $3K body does. Cue the slight disappointment each time. Waaah. Good thing I like cheese to go with my whine.

+1Only played around with 6D in daylight, but picked up a friends 5D3 a few days ago at night and I found the leak (or whatever it is) quite distracting. I never noticed anything similar on my old 350D, whereas my 60D would exhibit an issue similar to the 6D in very low light.It's kind of a non-issue in general of course, and just one of those un-avoidable things that one gets used to after a while.

What I want to know is when Canon will start to properly support the needs of its most critical photographers: those who specialize in unfocussed low-light extreme macro shots of the back sides of lens caps. Clearly, this is a market segment that simply will not go ignored!

b&

And here it is!a low-light extreme macro shot of the back side of a Lens Cap.

What I want to know is when Canon will start to properly support the needs of its most critical photographers: those who specialize in unfocussed low-light extreme macro shots of the back sides of lens caps. Clearly, this is a market segment that simply will not go ignored!

b&

And here it is!a low-light extreme macro shot of the back side of a Lens Cap.

I am so so sorry it is in focus

I got you beat...in this case, the lens cap is actually properly attached to the lens.

Very close! No crop -- that's the full frame from the 8-15, shot at 15mm and minimum focus distance. ISO 12,800, f/4, 30 seconds.

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What do you think I have used ?

My first guess was the 50 compact macro, but that takes an E-52 lens cap. My next guess was the MP-E 65, but that also takes an E-52. I don't think it's the 180 macro, which would leave either one of the 100s or that EF-S macro.

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At my shot the lens cap is clicked in into two lines of the filter thread. So I think it also counts as attached or not ?

Hmmm...I thought the whole point of these lens caps shots was to demonstrate inferior engineering as evidenced by light leaks. No fair if you're the one introducing the leak!